On 9/28/11 2:19 PM, Isidora wrote: > Hi Filipe, > > I have just seen your answers. I am trying to plot on a background GIF map, > lines like the ones you can see in > http://www.spc.noaa.gov/products/outlook/day1probotlk_2000_wind.gif. I can > plot the lines as you see them in this link without a problem. However, > because those lines are not closed polygons, the filling extends only to a > straight line between first and last point of the curve. > I want the filling to extend all the way to the border of United States. > > Since drawcountries() return a Collection of paths without any metadata > identifying the country/countries been separated by it, I cannot use it to > mask the area outside ofthe borders out. > > I'd appreciate any link/documentation I could read to help me resolve this > issue. > > Thank you Isidora
Nobody has tried to do this (that I know of), so I can't point you to anything specific. Did you see my message about creating a gridded field (say 1's for points inside and 0's for points outside the region), the calling contour to draw the line? You can use the is_land method to determine if a point is over land or not, but there is not way to determine whether a given point is inside a country. As you found out, there is no metadata associated with the coastlines or political boundary lines. The fillcontinents method returns a list matplotlib polygon instances that represent the land areas. One of them is North America, and could be used to clip your line segments - but there is no easy way to determine which one it is. If you can find a shapefile that just contains a CONUS polygon, you could use that I suppose. -Jeff -- Jeffrey S. Whitaker Phone : (303)497-6313 Meteorologist FAX : (303)497-6449 NOAA/OAR/PSD R/PSD1 Email : jeffrey.s.whita...@noaa.gov 325 Broadway Office : Skaggs Research Cntr 1D-113 Boulder, CO, USA 80303-3328 Web : http://tinyurl.com/5telg ------------------------------------------------------------------------------ All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity and more. Splunk takes this data and makes sense of it. Business sense. IT sense. Common sense. http://p.sf.net/sfu/splunk-d2dcopy1 _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
